20212220012200 has 48 divisors (see below), whose sum is σ = 47033203281660. Its totient is φ = 8078042112000.

The previous prime is 20212220012191. The next prime is 20212220012221. The reversal of 20212220012200 is 221002221202.

It can be written as a sum of positive squares in 6 ways, for example, as 18048443735716 + 2163776276484 = 4248346^2 + 1470978^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42550041 + ... + 43022440.

Almost surely, 2^{20212220012200} is an apocalyptic number.

20212220012200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20212220012200 is an abundant number, since it is smaller than the sum of its proper divisors (26820983269460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20212220012200 is a wasteful number, since it uses less digits than its factorization.

20212220012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85573678 (or 85573669 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20212220012200 its reverse (221002221202), we get a palindrome (20433222233402).

The spelling of 20212220012200 in words is "twenty trillion, two hundred twelve billion, two hundred twenty million, twelve thousand, two hundred".